Answer: the most important lesson is the terrible price paid when America loses a war
Explanation:
I think it is to help the president make certain decision and if he/she dies they take over
After the Vietnam War ended, immigration by Vietnamese refugees skyrocketed. Also, American soldiers began bringing home Laotian brides from the country of Laos, called Hmong. This is why the United States has a large Hmong population in the Midwest.
Russia got the bomb
Spying was ramped on both sides.
There was an arms race and it was open, which was the main reason for Eisenhower warning against the Military Industrial complex. The military was just becoming far too powerful.